• Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia.
• Bulgarian Academy of Sciences, Sofia, Bulgaria.
• Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia.
• Institute for Medicinal Plant Research “Dr. Josif Pančić”, Belgrade, Serbia.
• Hacettepe University, Faculty of Pharmacy, Ankara, Turkey.
• Faculty of Medicine, Department of Neurology and Neuroimmunology, Columbia University, New York, USA.
• Faculty of Science, University of Stockholm, Sweden.
• Department of Pharmacy, University of Copenhagen, Denmark.
• International Centre for Genetic Engineering and Biotechnology, Trieste, Italy.
• Karolinska Institutet – Medical University, Stockholm, Sweden.
• Mediterranean Agronomic Institute of Chania (MAICh), CIHEAM, Chania, Greece.
• University of Veterinary Medicine, Vienna, Austria.
• Queen’s University of Kingston, Ontario, Canada.
• Ghent University, Ghent, Belgium.
• Shanghai Institute of Materia Medica, Chinese Academy of Sciences, People’s Republic of China.
• Chinese National Compound Library, Shanghai, People’s Republic of China.
• Austrian Drug Screening Institute (ADSI), Innsbruck, Austria.
• Faculty of Chemistry and Pharmacy, University of Innsbruck, Innsbruck, Austria.
• Faculty of Pharmacy, University of Valencia, Valencia, Spain.
• Agricultural University in Tirana, Tirana, Albania.